Firefox is to feature new tools for web developers. Firefox 10 to be released in early 2012, will add HTML and CSS inspectors designed to help web developers inspect and debug their code. Later releases will add more features, like a 3-D page inspector and a built-in code editor.

Developers can see the HTML and CSS rules applied to any selected page element. This makes it easy to navigate through different page elements while viewing the HTML document structure for the page,” said Mozilla.

Other improvements and new features include a new Full Screen API, for games and video, as well as a better implementation of the IndexedDB specifications.